Vehicle spring



J. A. WALLIS.

VEHICLE SPRING.

' APPLICAHON FILED JAN.22, 1921.

////I//I/I/I/j. ////////////A Patented Jan. 17, 1922.

I lnvenTo:

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waren states mram series I JOSEPH A. WALLIS, OF BEVERLY, MASSAGHUSETTS.

VEH'ICLE SPRING. r

To' all whom't may con cem:

Be it known that I, JOSEPH A. YVALLIs, a citizen of the United States, and resident of Beverly, county of Essex, State of Massachusetts, have invented an Improvement in Vehicle Springs, olwhich the following description, in connection with the accompanying drawing, isa specification, like characters on the drawing representing like parts.

This invention relates to vehicle springs of that type comprisng a plurality of leaves,

and it has' for ts prncipal object to provide an improved spring which is water proof thus making it impossible for mois- -ture to get'between the leaves of the spring and cause rust.

Another object of the invention is' to provide an improved vehicle spring in which the leaves are separated and held out of contact 'with each other thus avoiding the rubbing action which normally occurs between the leaves of the spring as the latter flexes.

.Another object of the invention is to provide an improved vehicle spring in which the spaces between the separated leavesare filled with rubber or some similar material and in which the assembled leaves are enclosed in a water' proof material preferably of rubber. v

Other objects of the invention are to nnprove generally vehicle springs all as Wll'l be more fully hereinafter set forth.

lniorder to give an understandng of my invention I have illustrated in the drawings an automobile spring embodyng the 'invention which will now be described after which the novel features will bepointed out in the appended claims.

Fig. l is a side view of one end oi a springhaving my" improvements applied theretc.

Fig. 2 is an enlarged section on the line 2-2, Fia l.

Fig. 3 is a section on the line 3- -3, F1g. 1.

The spring is of the usual type comprsing a plurality of leaves, 2 3, l, 5, and 6, these leaves having' -a varying length as is nsual in antomobile springs of this type.

The leaves are held separated from each other ihrenghout the entire length of the that there is ne' metal to metal.

' the portions ot the spring that e center of the spring' where it to the automobi ale l these i ieaves are spaced by means oti specification of Letters Patent. Patented Jan. 17, 1922.

Application filed January 22, 1921. Serial No. 439346.

spacing blocks 8. Throughout the rest of the length of the spring the leaves are separated by means of a filling: of rubber or similar material 11 which is situated between and fills the spaces between the leaves' In order that this filling material' may function properly it is necessary, of course, that it should be retained in place, and such retention of the filling material may be accomplished in various ways depending upon the character of said filling material. In the preferred embodiment of my invention I propose to hold the-leaves separated by a filling of rubber and one way of securing the rubber to the spring so that it will remain This provides a' spring in which each leaf is encased in a rubber casing so that there is no metal to metal contact. The rubber between the leaves however is of sutlicient thickness and flexibility to allow of the relative movementof the leaves when the spring' is flexed.

I also propose to apply an exterior" layer of rubber to the spring and this can conveniently be done by first winding* the automobile leaves with a tape 12 and then applying a coating or layer 13 of rubber to the exterior of the tape.` This rubber layer may also be cured or vulcanized if desired. spring thus made has the separated leaves spaced from each other throughout their length and at the portion of the spring where the leaves move relative to each other when the spring flexes, the spacing material .each other.

Although l have shown a Construction wherein the fabrie i is used 'for assisting in holding' 'the rubber filling place do not wish to be limited te 'this construc- A spring .canized thereon.

2. In a vehicle spring, the combination with a pluralty of leaves, separated from each other, of a filling of resilient material between the separated leaves, and a rubber casng enclosing the spring and vulcanized thereon.

3. In a vehicle spring, the combinatioi with a plurality of leaves, of a fabric qas ing enclosi g each leaf, a wrapping of`tape or similar material-Wenn& about the a'ssembled leaves, and a water proof casing on the outside of the wrapping. v

4. In a vehiclesprng, the combination with a plurality of leaves, of a fabric cas ing enclosing each leaf, a wrapping of tape or similar material Wound about the assemblel leaves, and a I'ubber covering enelosing the wrapped spring and vulcanized thei-eto.

In testimony whereof, I have signed my name tothis specification.

JOSEPH A. WALLIS. 

